145986709 has 16 divisors (see below), whose sum is σ = 170496000. Its totient is φ = 123588720.

The previous prime is 145986683. The next prime is 145986733. The reversal of 145986709 is 907689541.

It is a cyclic number.

It is not a de Polignac number, because 145986709 - 2¹³ = 145978517 is a prime.

It is a super-3 number, since 3×145986709³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145986739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6412 + ... + 18250.

It is an arithmetic number, because the mean of its divisors is an integer number (10656000).

Almost surely, 2^145986709 is an apocalyptic number.

145986709 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

145986709 is a deficient number, since it is larger than the sum of its proper divisors (24509291).

145986709 is a wasteful number, since it uses less digits than its factorization.

145986709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11928.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 145986709 is about 12082.4959755839. The cubic root of 145986709 is about 526.5477638877.

The spelling of 145986709 in words is "one hundred forty-five million, nine hundred eighty-six thousand, seven hundred nine".